I expected William to be jealous of Louis as he's been an "only" dog all his life (he's 5), but he seems to be quite withdrawn as well as grumpy. I'm not sure if I'm handling the situation the best way and would appreciate some advice please.
Louis has been here for 4 days, so not long, and maybe I'm expecting too much. William doesn't want to be in the same room as Louis and will often walk out and take himself upstairs. If Louis comes close William sometimes ignores him but often growls, usually quietly but sometimes a bit louder. Louis is very persistent and doesn't seem to take the hints that William is giving him. He's always running up to William and trying to play with him, or sniff him, or just generally bouncing about near him.
The worst 2 incidents have been -
1. William was fast asleep on the hall floor and Louis legged it down the hall and jumped on poor William's head. I think Wills was quite restrained really because he leapt up in surprise, growled and snapped at Louis (but didn't make contact) then moved away.
2. The postman rang the doorbell this morning. OH answered the door with both dogs close by. Both went to say hello to the postman and William snapped at Louis and knocked him over. I wasn't there, but OH said Louis was very subdued for a few minutes afterwards.
So far we've been allowing William to find his own space and not telling him off if he growls. I think I should be trying to let them get on with it and sort themselves out providing Louis isn't actually being hurt. But I'm worried that William is becoming withdrawn when he's at home. He's fine out on his walks (no Louis nearby of course) and he's eating normally. But he's keeping himself away from me if Louis is anywhere nearby and of course Louis is near me pretty much all the time, apart from when he's asleep or if OH or someone else is paying attention to him. The main problem is with me as William is so very attached to me.
The other thing we've realised is that William is no longer drinking from his water bowl now that Louis uses it
. I've been monitoring him for a day and a half and he had a huge drink of water at a friend's house yesterday morning, then nothing until I filled a cereal bowl at lunchtime today and he drank loads again. In between times I saw him go to his normal water bowl lots of times, sniff it and turn away. The bowl is cleaned and fresh water put in twice a day.
I feel really sorry for William but I don't know if I should try doing nothing for a few more days to see if he accepts Louis, or if I should be doing something more proactive now, and if so what?
Any suggestions please?